uk.ac.starlink.ttools.plot

Class BitmapSortPlotVolume

java.lang.Object

uk.ac.starlink.ttools.plot.PlotVolume

uk.ac.starlink.ttools.plot.BitmapSortPlotVolume

public class BitmapSortPlotVolume
extends PlotVolume

PlotVolume implementation which accumulates all points to plot and then draws them in a way suitable for a bitmap-type context. Transparency is rendered. Points with and without error bars can be plotted.

Since:

26 Mar 2007

Author:

Mark Taylor

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BitmapSortPlotVolume.Workspace Opaque workspace object for use with BitmapSortPlotVolume instances.

Constructor Summary

Constructors

Constructor and Description
BitmapSortPlotVolume(Component c, Graphics g, MarkStyle[] styles, double padFactor, int[] padBorders, double fogginess, boolean hasLabels, boolean hasErrors, double zmin, double zmax, DataColorTweaker tweaker, BitmapSortPlotVolume.Workspace ws) Constructor.

Method Summary

Modifier and Type	Method and Description
void	flush() Do the plotting.
void	plot2d(int px, int py, double z, double[] coords, int istyle, boolean showPoint, String label, int nerr, int[] xoffs, int[] yoffs, double[] zerrs) Plots an marker and optional associated error values at a given point in graphics coordinates with given additional Z coordinates.

Methods inherited from class uk.ac.starlink.ttools.plot.PlotVolume

createFoggingTweaker, getFogger, getGraphics, getScale, getStyles, packRgba, plot3d, projectX, projectY, unpackRgba

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BitmapSortPlotVolume

public BitmapSortPlotVolume(Component c,
                            Graphics g,
                            MarkStyle[] styles,
                            double padFactor,
                            int[] padBorders,
                            double fogginess,
                            boolean hasLabels,
                            boolean hasErrors,
                            double zmin,
                            double zmax,
                            DataColorTweaker tweaker,
                            BitmapSortPlotVolume.Workspace ws)

Constructor.

Parameters:

c - component

g - graphics context

styles - array of marker styles which may be used to plot

padFactor - minimum amount of space outside the unit cube in both dimensions - 1 means no extra space

padBorders - space, additional to padFactor, to be left around the edges of the plot; order is (left,right,bottom,top)

fogginess - thickness of fog for depth shading

hasLabels - must be true if any of the points to be plotted will have associated labels

hasErrors - must be true if any of the points to be plotted will contain errors

zmin - a lower limit for z coordinates of plotted points

zmax - an upper limit for z coordinates of plotted points

tweaker - colour adjuster for using auxiliary axis coords

ws - workspace object

Method Detail

plot2d

public void plot2d(int px,
                   int py,
                   double z,
                   double[] coords,
                   int istyle,
                   boolean showPoint,
                   String label,
                   int nerr,
                   int[] xoffs,
                   int[] yoffs,
                   double[] zerrs)

Description copied from class: PlotVolume

Plots an marker and optional associated error values at a given point in graphics coordinates with given additional Z coordinates. Points with greater Z values should obscure points with lesser ones. The ordering of the error points is that required by the ErrorRenderer class.

Most implementations currently ignore the Z values associated with the error points, and put everything at the depth of the central point, because it's too hard to do otherwise. Does this produce seriously confusing visualisation?

Specified by:

plot2d in class PlotVolume

Parameters:

px - graphics space X coordinate of the central point

py - graphics space Y coordinate of the central point

z - depth of point; a point with a greater z should obscure a point with a lesser one

coords - original coordinate array; as well as (redundant) x,y,z values it may contain auxiliary axis coordinates

istyle - index of the style used to plot the point

showPoint - whether the central point is to be plotted

label - label for point, or null

nerr - number of error points, or zero for no errors

xoffs - nerr-element array of graphics space X coordinates for error points

yoffs - nerr-element array of graphics space Y coordinates for error points

zerrs - nerr-element array of depths for error points

flush

public void flush()

Do the plotting.

Specified by:

flush in class PlotVolume